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noun

americium

am-uh-RISS-ee-uhm
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Americium (noun) means a chemical element with the symbol Am and atomic number 95. Example: “Americium has the atomic number 95.”

noun
1
A chemical element with the symbol Am and atomic number 95.
"Americium has the atomic number 95."
"The symbol for americium is Am."
"Americium takes its name from the Americas."

How to use americium

Learner’s notes

In plain EnglishThe name of the chemical element with atomic number 95.

When to use it

A technical word from chemistry, used in science teaching and writing.

Memory tip

It is usually uncountable, so say americium is an element rather than an americium.

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Common pairings
americium atom element americium symbol Am atomic number 95
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Fill the gap

Can you complete this real example?

_____ has the atomic number 95.

Etymology

The name is formed from Americ(as) plus the suffix -ium, by analogy with europium.

Origin: English

Rhymes for americium

See all rhymes for americium →

Frequently asked questions

What is americium?
Americium is a chemical element with the symbol Am and atomic number 95.
Where does the word americium come from?
It is formed from the Americas plus the suffix -ium, by analogy with europium.
What is the symbol for americium?
The symbol is Am.
What is the meaning of americium?
"americium" (noun) means a chemical element with the symbol Am and atomic number 95.
Definitions: FreeDict original editorial